Insulated glass, also named insulated double glazing, double glazed panels, or double glazed units, its a hermetically sealed multi-glass combination consisiting two or more panes separated by a spacer filled with high efficient desiccant .To ensure the sealing effect, first sealing finished by polysulfide adhesive and second by strucural sealnt.The most important function of insulated glass is reducing thermal loss, achieve lower energy consumption and good transparency.